On the File menu, click Page Setup, and then click the Margins tab.
Under Margins, select the options you want.
Note To change the default margins, click Default after you select new margin settings. The new default settings are saved in the template on which the document is based. Each new document based on that template automatically uses the new margin settings.
You can also do one of the following:
Set mirror margins for facing pages
Margins of the left page are a mirror image of those on the right page. That is, the inside margins are the same width, and the outside margins are the same width.
- On the File menu, click Page Setup, and then click the Margins tab.
- In the Multiple pages list, select Mirror margins.
- In the Inside and Outside boxes, enter values for the mirror margins.
Set gutter margins for bound documents
A gutter margin setting adds extra space to the side or top margin of a document you plan to bind. A gutter margin ensures that text isn't obscured by the binding.
- On the File menu, click Page Setup, and then click the Margins tab.
- In the Multiple pages list, select Normal.
- In the Gutter box, enter a value for the gutter margin.
- In the Gutter position box, click Left or Top.
Note To change the margins for part of a document, select the text, and then set the margins you want. In the Apply to box, click Selected text. Microsoft Word automatically inserts section breaks before and after the text with the new margin settings. If your document is already divided into sections, you can click in a section or select multiple sections and then change the margins.